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2 multiple cpu system – MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU User Manual

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2 MULTIPLE CPU SYSTEM

(b) Automatic refresh setting

Setting for use of the automatic refresh function in the Multiple CPU high
speed transmission area.
Up to 32 setting ranges can be set for each CPU module.
Automatic refresh setting screen and setting range are shown below.

Table 2.8 Parameter setting items of automatic refresh setting

Item

Setting description

Setting range

Restriction

Data size

consistency

check

CPU
selection

Select the CPU module for editing of the
CPU specific send range setting.

CPU No.1 to No.4

• CPU No. which exceeds the

number of CPU modules cannot
be selected.

Setting No.

The setting No. for transmission of each
CPU module is displayed. Automatic
refresh is executed between devices set to
the same setting No. for all CPUs that
constitute the Multiple CPU system.

1 to 32

Points

Set the number of points for data
communication.

Range: 2 to 14336 [points]
Unit: 2 [points]

• Setting which exceeds the

number of points of the self CPU
send area allocated to the each
CPU module (CPU specific send
range) cannot be set.

• Bit device can be specified in

units of 32 points (2 words) only.

Provided

Start

Specifies the device which performs the
data communication (automatic refresh).
Specifies the device sent by the self CPU
when the "Send source CPU selection" is
the self CPU, and specifies the device
received by the self CPU when the CPU
specific send range setting is the other
CPU.

Usable device ( X, Y, M, B,
D, W, #, SM, SD)
Note) Set "blank" when

automatic refresh is
not executed.

• Bit device can be specified in

units of 16 points (1 word) only.

• Device number cannot be

duplicated.

None

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